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Services Applications

  • IFA 2.0 initiator and terminator support with new live and probe modes (QFX5240-64OD and QFX5240-64QD)—Collect per-flow metrics in the data plane using Inband Flow Analyzer (IFA) 2.0 to monitor latency and congestion, to trace paths and flows, and to analyze per-hop and end-to-end telemetry without control-plane involvement or forwarding impact. The new modes are as follows:

    • In live mode, IFA 2.0 uses the original packets as IFA probe packets.

    • In probe mode, IFA 2.0 uses copies of the original packets as the IFA probe packets.

    Configure an IFA initiator node to initiate IFA probe packets:

    • In live mode, the initiator inserts IFA headers and metadata into the live packets.

    • In probe mode, the initiator samples the flow and copies that sample to create the probe.

    Configure an IFA terminator node to parse the IFA header in the packet to determine if it is a live or probe packet:

    • If it is a live packet, then the terminator strips the IFA layer and forwards the modified live packet to its destination.

    • If the packet is a probe packet, then the terminator drops the packet and sends a mirror copy to the collector.

    To specify the mode, configure the mode (live | probe) statement at the [edit services inband-flow-telemetry] hierarchy level. The default mode is probe. Use the show services inband-flow-telemetry global command to see probe results that include the mode information.

    [See Inband Flow Analyzer (IFA) 2.0 Probe for Real-Time Flow Monitoring, inband-flow-telemetry, and show services inband-flow-telemetry.]